Fix formatting (RCS1208) (fix #891)

src/Tests/Analyzers.Tests/RCS1208ReduceIfNestingTests.cs

@@ -0,0 +1,53 @@
+// Copyright (c) Josef Pihrt and Contributors. Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System.Threading.Tasks;
+using Microsoft.CodeAnalysis;
+using Roslynator.CSharp.CodeFixes;
+using Roslynator.Testing.CSharp;
+using Xunit;
+
+namespace Roslynator.CSharp.Analysis.Tests
+{
+    public class RCS1208ReduceIfNestingTests : AbstractCSharpDiagnosticVerifier<ReduceIfNestingAnalyzer, IfStatementCodeFixProvider>
+    {
+        public override DiagnosticDescriptor Descriptor { get; } = DiagnosticRules.ReduceIfNesting;
+
+        [Fact, Trait(Traits.Analyzer, DiagnosticIdentifiers.ReduceIfNesting)]
+        public async Task Test()
+        {
+            await VerifyDiagnosticAndFixAsync(@"
+class C
+{
+    void M(bool p)
+    {
+        [|if|] (p)
+        {
+            M2();
+        }
+    }
+
+    void M2()
+    {
+    }
+}
+", @"
+class C
+{
+    void M(bool p)
+    {
+        if (!p)
+        {
+            return;
+        }
+
+        M2();
+    }
+
+    void M2()
+    {
+    }
+}
+");
+        }
+    }
+}

src/Workspaces.Common/CSharp/Refactorings/ReduceIfNesting/ReduceIfNestingRefactoring.cs

@@ -31,7 +31,7 @@ public static async Task<Document> RefactorAsync(
                 semanticModel,
                 cancellationToken);
 
-            SyntaxNode newNode = rewriter.Visit(node);
+            SyntaxNode newNode = rewriter.Visit(node).WithFormatterAnnotation();
 
             return await document.ReplaceNodeAsync(node, newNode, cancellationToken).ConfigureAwait(false);
         }